Abstract

We have demonstrated an improvement of photovoltaic performance based on the nanostructured ZnO/poly(3-hexylthiophene) (P3HT) hybrid through interface molecular modification on ZnOnanorodsurface. By probing the carrier dynamics at ZnO/P3HT interfaces, we have found that the interfacial molecules can play the role of assisting charge separation and suppression of back recombination at interfaces, which accounts for the observed enhanced short circuit current and open circuit voltage in photovoltaic performance.

Received 21 November 2008Accepted 18 January 2009Published online 13 February 2009

Acknowledgments:

This work is supported by National Science Council, Taiwan (Project No. NSC 96-2112-M-002-030-MY3) and U.S. Airforce (Project No. AOARD 074-014). The authors would also like to thank Mr. Wei-Chao Chen at the Center for Condensed Matter Sciences, NTU for providing the SEM image.

Abstract

We have demonstrated an improvement of photovoltaic performance based on the nanostructured ZnO/poly(3-hexylthiophene) (P3HT) hybrid through interface molecular modification on ZnOnanorodsurface. By probing the carrier dynamics at ZnO/P3HT interfaces, we have found that the interfacial molecules can play the role of assisting charge separation and suppression of back recombination at interfaces, which accounts for the observed enhanced short circuit current and open circuit voltage in photovoltaic performance.

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The influence of interface modifier on the performance of nanostructured ZnO/polymer hybrid solar cells